Critical Risk →

tag

Manages git tags. Supports list (default), create, and delete actions. List returns structured tag data with name, date, and message. Create supports lightweight and annotated tags.

How to control tag ↓

What tag does on Github

AI agents call tag to permanently remove resources in Github — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

Critical Risk

Why tag needs a policy

The delete capability makes this Destructive rather than Write. Deleting git tags can break CI/CD pipelines, release tracking, and version history. While not as severe as deleting source code, tag deletion is irreversible and can cause operational disruption.

From the tool's definition Tool supports 'delete' action on git tags, which irreversibly removes version control metadata. Description states: 'Manages git tags. Supports list (default), create, and delete actions.'

Documented attack patterns abuse exactly the kind of access tag gives an agent:

How to control tag

PolicyLayer is an MCP gateway — it sits between your AI agents and Github, and nothing reaches the server without passing your rules. This is the rule we recommend for tag:

policy.json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "tag"
  ]
}

tag disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

  1. Create a free account and register Github — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

Go deeper

Questions about tag

What does the tag tool do? +

Manages git tags. Supports list (default), create, and delete actions. List returns structured tag data with name, date, and message. Create supports lightweight and annotated tags. It is categorised as a Destructive tool in the Github MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on tag? +

Register the Github MCP server in PolicyLayer and add a rule for tag: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Github. Nothing to install.

What risk level is tag? +

tag is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit tag? +

Yes. Add a rate_limit block to the tag rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block tag completely? +

Set action: deny in the PolicyLayer policy for tag. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides tag? +

tag is provided by the Github MCP server (@paretools/github). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Github tool call.

Start from Github, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

202 Github tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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